Secoroc Down the Hole Equipment

Rock Drilling Tools

Always Drill for Gold

As ever more drillers are discovering, DTH offers a flexibility and profit potential that can't be ignored. Optimized for hole diameters between 90 mm and 254 mm, the DTH drilling method provides unrivalled precision. So if you're currently drilling or planning to drill holes of this size you might want to check out what DTH in general -- and Atlas Copco Secoroc in particular -- can offer.

Greater flexibility. Employing the DTH method, it's easy to optimize the layout of a quarry or open pit mine. That's why this technique is rapidly replacing not only traditional rotary units in blast-hole drilling, but also top-hammers in delivering perfect quality holes. After all, why change rig when all you need to do is change the size of your hammer!

In addition, DTH lends itself superbly to numerous other applications, including water well drilling, exploration, foundation, anchoring, and geothermal holes.

Unbeatable productivity...

The unbeatable performance of Secoroc COP DTH hammers is down to innovation. Numerous novel features, including our patented air cushion, combine for superior penetration and modest air/fuel consumption. Our hammers are complemented by a full range of Premium Plus DTH bits, featuring new head designs for maximum efficiency. Productivity, however, isn't just gauged by how far you can drill in a day. It's also measured by how long your equipment lasts -- a fact we've given a great deal of thought to.

...and equally unbeatable back-up

We provide a comprehensive selection of tools to help your equipment maintain its performance. For a start there's Secoroc Grind Matic, the world's most extensive range of grinding equipment, designed to ensure your bits remain on the cutting edge. Then there are our robust DTH tubes, guaranteeing a trouble-free drilling cycle. There's also Secoroc COP backhammers, which allow you to extract equipment that might otherwise be lost.

These products all add up to the most productive package in DTH drilling history. We call it Lifecycle Penetration Rate.

Welcome to the world of Secoroc.

A Close Look at the
World's Best
DTH Equipment

Secoroc COP hammers enjoy an unparalleled reputation for productivity and the lowest cost per meter drilled. A host of fresh design features combine to utilize the air for superior penetration and maximum efficiency. Our 6" hammer is a good example, designed as it is to meet the exacting demands of DTH drillers the world over.

Handling pressureDrilling means subjecting your equipment to pressure. And the leap to today's 25 bar high-pressure standard has been tough. Compression rings and buffers are especially vulnerable. Not so for COP 64 Gold. Equipped with a steel disc spring and new lower buffer, operating pressure enjoys a market high of 30 bar.

Blowing the problem awayA large influx of water creates back pressure in the hole. This can have a dampening effect on productivity -- but not if you use COP 64 Gold. This hammer continues to work efficiently even under back pressure, maintaining performance all the way down the hole.

A further productivity boost is provided by a new feature which permits you to change the air flow through the hammer by adjusting the length of the foot valve. We provide a user-friendly tool for the job; you'll complete the adjustment in a matter of minutes.

Outlasting the competitionWhen it comes to reliability, COP 64 Gold is rapidly becoming the industry benchmark. It's new cylinder, made of special high strength steel, is ideal for abrasive applications. Furthermore, the 12-spline bit design keeps spline wear to a minimum. Ultimately, you're looking at a considerably longer service life compared to competing equipment.

Smooth performerOur new hammer has a built-in shock absorber, preventing devastating recoils in the drill string and severe damage to the mast structure and rotation unit. The spin-off effect is a boost in productivity -- less maintenance means higher availability and far more meters drilled.

Efficiency by designOn COP 64 Gold, we've given the piston a pentagon shape. That, combined with milled air slots in the cylinder, greatly enhances piston guidance. And, of course, less internal wear means sustained efficiency and productivity throughout the life of the hammer.

Easy to change bitsThe unique combination of different threads in the top subs and chucks ensures swift and easy bit changes. In fact, because you can break the chuck thread open by hammering against the rock or a block of wood, it'll never take you longer than a few minutes. Another productivity booster!

Choosing the Right Hammer

Choosing which hammer to use is largely determined by hole size and the type of formation you're working in. Ideally, the size of the hammer should match the required hole dimension as closely as possible -- leaving just enough space for cuttings to evacuate the hole.

HD designDesigned for abrasive and demanding applications, our Heavy Duty hammer features a larger overall diameter, in turn allowing for thicker walls and, ultimately, a longer service life. What's more, it's equipped with reversing back-out buttons, not only protecting the top sub from wear as it retreats from a collapsed hole, but also helping to free the hammer as it's being pulled out.

Technical Data

Hammer

COP 34

COP 44

COP 54

Length excl. thread

37.55 in.

954 mm

37.72 in.

958 mm

42.08 in.

1069 mm

External diameter

3.28 in.

83,5 mm

3.86 in.

98 mm

4.72 in.

120 mm

External diameter HD

4.96 in.

126 mm

Hammer weight

60 lbs.

27 kg

84 lbs.

38 kg

126 lbs.

57 kg

Hammer weight HD

148 lbs.

67 kg

Piston diameter

2.67 in.

68 mm

3.07 in.

78 mm

3.93 in.

100 mm

Piston weight

10.7 lbs.

4,8 kg

16 lbs.

7,1 kg

28 lbs.

12,5 kg

Top sub thread

2 3/8 " API Reg

2 3/8" API Reg

2 3/8" API Reg

3 1/2" API Reg

Wrench flat

2.6 in.

65 mm

2.6 in.

65 mm

2.6 in.

65 mm

Wrench flat HD

3.70 in.

95 mm

Feed force, (normal)

(6 kN)

3-12 kN

(10 kN)

5-15 kN

(12 kN)

6-17 kN

(normal)

(1300 lbs.)

700-2500 lbs.

(2200 lbs.)

1100-3300 lbs.

(2600 lbs.)

1300-3700 lbs.

Working pressure

87-360 psi

6-25 bar

87-360 psi

6-25 bar

87-360 psi

6-25 bar

Rotation speed

30-90 r/min.

25-80 r/min.

20-70 r/min.

Recommended bit size

3 5/8-4 1/8 in.

92-105 mm

4 5/16-5 in.

110-125 mm

5 1/4-6 in.

134-152 mm

Rec. bit size HD hammer

5 1/4-6 in.

140-152 mm

Bit shank

COP 34

IR 34

IR 350

Technical Data

Hammer

COP 64 Gold

COP 84L

COP 84

Length excl. thread

45.78 in.

1163 mm

52.70 in.

1230 mm

52.08 in.

1323 mm

External diameter

5.59 in.

142 mm

6.30 in

160 mm

7.01 in.

178 mm

External diameter HD

5.75 in.

146 mm

Hammer weight

212 lbs.

96 kg

306 lbs.

139 kg

348 lbs.

158 kg

Hammer weight HD

241 lbs.

109 kg

Piston diameter

4.72 in.

120 mm

4.72 in.

120 mm

6.02 in.

153 mm

Piston weight

45 lbs.

20,5 kg

45 lbs.

20,5 kg

82 lbs.

37,3 kg

Top sub thread

3-1/2" API Reg

4-1/2" API Reg

4-1/2" API Reg

3-1/2" API IF

Wrench flat

4.0 in.

102 mm

4.7 in.

120 mm

5.5 in.

140 mm

Wrench flat HD

Feed force, (normal)

(14 kN)

7-20 kN

(14 kN)

7-20 kN

(22 kN)

10-30 kN

(normal)

(3100 lbs.)

1600-4400 lbs.

(3100 lbs.)

1600-4400 lbs.

(4800 lbs.)

2200-6600 lbs.

Working pressure

174-430 psi

12-30 bar

87-360 psi

6-25 bar

87-290 psi

6-20 bar

Rotation speed

25-60 r/min.

10-40 r/min.

10-35 r/min.

Recommended bit size

6-1/8-7 in.

156-178 mm

7-1/2-8-5/8 in.

191-219 mm

8-10 in.

203-254 mm

Rec. bit size HD hammer

6-1/2-7 in.

165-178 mm

Bit shank

IR QL 60

Mission SD8/63-15

IR 380

Hammer Types

Type

Std.

HD

L

COP 34

X

COP 44

X

COP 54

X

X

COP 64

X

X

COP 84

X

X

Air Consumption

Invest One,

Get Five Back

Gas prices are rising. That's why it's crucial to drill with maximum fuel efficiency. Thanks to the smart design of our hammers, you'll find the slightly higher costs you incur to make compressed air are more than compensated by the five-fold payback in increased productivity. We'll say it again: Invest one, get five back.

Full service on-site in just 30 minutes

Regular service intervals are essential to ensure high availability and low fuel consumption.

To this end, we provide a combined field service breakout bench, allowing you to break and service the hammer in the same vice.

No special tools are required once the top sub and chuck threads have been loosened. The bench can handle hammer sizes from 3" up to 8".

Breakout Bench

Worn hammer? Rejuvenate it with our Economy Kit

Traditionally, a DTH hammer has to be replaced when it is either worn out externally or the penetration rate has dropped by 20% or more

That's not the case with an Atlas Copco Secoroc hammer. With our Economy Kit -- consisting of top sub, cylinder, and chuck -- you can readily replace worn components.

This way you'll be able to rebuild your hammer at least once -- with no drop in performance -- before it's time to invest in a new one.

Hammer Economy Kit

Sustained Hammer Efficiency

SECOROC COP backhammers -- saving time and equipment

Our COP Backhammer has been built with one purpose in mind: To save you time and money if your equipment's stuck in a hole.

The backhammer can be fitted in a suitable tube joint between the drill support and the rotation head, providing an effective combination of backward hammering and vibrations.

COP backhammers are tough and dependable. They come in just three parts with a plastic cover. Maintenance consists only of keeping it clean and protecting the connections when the unit is not in use. The plastic cover acts as a muffler in addition to diverting the discharged air.

COP Backhammer

1 - Cover 4 - Spindle
2 - Piston 5 - Choke plug
3 - Anvil

COP Backhammer

Standard Thread 3-1/2 API Reg

COP BH 140

COP BH 160

COP BH 190

Hammer size

3-5 in.

-

5-6 in.

-

8-12 in.

-

Working pressure, max

116 psi

8 bar

116 psi

8 bar

116 psi

8 bar

Installed length

16.34 in.

415 mm

17.52 in.

445 mm

17.52 in.

445 mm

Diameter

7.08 in.

180 mm

7.87 in.

200 mm

8.85 in.

225 mm

Weight

68 lb.

31 kg

97 lb.

44 kg

139 lb.

63 kg

Air consumption at 6 bar 75%

Choke plug without hole

89 cfm

42 l/s

123 cfm

58 l/s

142 cfm

67 l/s

SECOROC Drill Tubes --
Part of a Productive Package

Though their importance is often underestimated, tubes play an important role in DTH drilling -- regardless of application, rock type, hole depth, or drill rig. The key features of a high quality DTH tube are durability, accuracy, and manageability.

High quality tubingSecoroc tubes are made from cold drawn tubing, providing a superior surface finish and tolerance compared to their hot rolled counterparts. Our solution drastically reduces the risk of scaling -- the cause of so many premature hammer failures.

No weak linksTraditionally, the threads and the joint between the tube and the end-pieces are vulnerable. To combat the problem, we've friction-welded the joints for maximum strength and heat-treated the end-pieces for optimal durability.

Never losing the threadHeat-treating the threads ensures not only a long service life, but also simplifies joining and breaking -- thereby cutting cycle time. To meet varying demands, we provide a selection of API threads. For applications where foam injection is used, we recommend the IF thread.

Naturally, we also offer a wide range of subs and crossovers -- all made of high quality steel and heat-treated in the same way as tube end-pieces.

Drill Tube Range

Drill Tubes

RD50

2-3/8" API Reg

2-3/8" API
IF

2-7/8" API Reg

2-7/8" API
IF

OD 70 mm

Wall 3.6 mm

X

OD 76 mm

Wall 3.6 mm

X

X

OD 76 mm

Wall 5.6 mm

X

OD 89 mm

Wall 3.7 mm

X

X

OD 89 mm

Wall 5.7 mm

X

X

X

OD 102 mm

Wall 5.7 mm

X

OD 114 mm

Wall 3.6 mm

OD 114 mm

Wall 5.7 mm

X

OD 114 mm

Wall 7.9 mm

OD 127 mm

Wall 5.7 mm

Drill Tube Range

Drill Tubes

3-1/2" API Reg

Cubex 21

Cubex 24

Cubex 28

OD 70 mm

Wall 3.6 mm

OD 76 mm

Wall 3.6 mm

OD 76 mm

Wall 5.6 mm

X

OD 89 mm

Wall 3.7 mm

OD 89 mm

Wall 5.7 mm

X

OD 102 mm

Wall 5.7 mm

OD 114 mm

Wall 3.6 mm

X

OD 114 mm

Wall 5.7 mm

X

X

OD 114 mm

Wall 7.9 mm

X

OD 127 mm

Wall 5.7 mm

X

Quality
API Grade N-80

Standard
Tubes

End Pieces
and Adapters

Lower yield limit

N/mm2

min 550

min 550

Tensile strength

N/mm2

min 650

min 700

Elongation A5

min @

18

21

Core hardness

HB

190-230

210-250

Surface hardness

HRC

58-62

Thread

Description

RD 50

The classic DTH thread in 70 mm drill pipes.

2-3/8" API Reg

Conical thread for all-purpose application, both percussion and rotary drilling.

2-3/8" API IF

Conical thread for maximum internal passage.

2-7/8" API Reg

Conical thread for normal and heavy duty rotary drilling.

2-7/8" API IF

Conical thread with large internal passage diameter, but suitable for relatively low torque.

SECOROC Premium Plus --
That Bit More Productive

If bit quality isn't up to scratch, it will sooner or later affect rig availability and production capacity. To find just the right balance between penetration rate and bit life, you may have to try a great many bit designs first. If you have any questions about bit performance, don't hesitate to talk to your local Atlas Copco representative.

A benchmark solution
When our Premium bits were first introduced they were the benchmark by which all other DTH bits were measured. So when we started work on the next generation, the goals were, to put it mildly, ambitious.

Like their forerunners, Atlas Copco Secoroc's new Premium Plus DTH bits address the age-old problems of shanking and chunking. After extensive field tests in tough conditions, we can report a 10-13% increase in bit life--even up to 50% in some formations! Add to this a 5% increase in penetration rate, and we're confident our new range offers unbeatable value.

Tough bits for a tough life
The new Premium Plus design provides novel refinements such as a tougher steel grade for improved fatigue properties. Furthermore, we've not only repositioned the buttons for faster penetration, but also designed them to protrude more -- for improved cuttings removal, less secondary crushing, and easier bit grinding. And to reduce the risk of jamming in the hole, the taper on the bit head is shorter with a larger clearing. We can safely say that shanking and chunking are now so uncommon as to be considered rarities.

Convex front/ballistic buttons
Convex front with large cutting grooves plus ballistic gauge and center buttons. Ideal in soft to medium hard non-abrasive formations. The bit is designed for maximum penetration rate. Can even be used in hard abrasive formations if high penetration rate is called for.

How to Stay on the
Cutting Edge

To extract full capacity from your hammer, and squeeze the maximum number of meters from each bit, regular grinding is a must. Bear in mind that once the buttons are worse to a third of their diameter, wear accelerates dramatically and penetration rate suffers accordingly. Ultimately, you risk damaging the buttons beyond repair. The remedy? Grind in time.

SECOROC Grind Matic -- a complete range of grinding equipment
There is no better way to keep your buttons sharp than using our Grand Matic grinding machines. We provide solutions for every conceivable application -- including fixed installations, field operations, and manual grinders.

These grinders all feature our patented diamond grinding wheels. There is no better way to restore worn spherical and ballistic buttons to their original glory.

Grind Matic BQ2-DTH -- for large-scale production operationsA fast and efficient machine, Grind Matic BQ2-DTH is ideal for bigger drilling operations. Featuring an indexing bitholder and an automatic centering arm, plus a powerful motor, this is a machine with a truly impressive grinding capacity.

Grind Matic BQ2-DTH is built to last, too. The spindle bearing is protected by a splashguard. And all electrical and pneumatic components are housed in a cabinet on the side of the machine, protecting them from dust, dirt, and water.

Grind Matic Jazz handles every conceivable size -- from 35 mm all the way to 254 mm DTH bits. As you take the grinder with you wherever you go, a boost in production is sure to follow.

Grind Matic Manual B-DTH -- a hands-on grinderSpecifically designed for manual grinding of DTH bits, this air-powered machine is a model of economy. Mounted in a box fitted with wheels and handles, you take the grinder with you. Simply connect your Grind Matic Manual B-DTH to air and water -- and it's ready to use.

Grinding Wheel vs. Grinding Cup

Atlas Copco Secoroc --
A Solid DTH Partner

Our customers know they can depend on us -- regardless of whether they need training, support, service, or just some friendly advice. After all, we have so much more to our offer than world-beating products.

Every experienced driller knows that drilling productivity and drilling costs are influenced by a host of factors beyond price and performance. Rock characteristics and hole deviation have significant impact on drilling, as do operator experience or misuse and loss of drilling tools. There there's the time spent on administration and inventory management -- all of it just to have the tools to do the job over the next few days. Not to mention the care and maintenance necessary on bits or hammer if you want a well-tuned drill string.

So, if you're in the market for the best DTH partner -- on-side and online -- then we urge you to read this section of the brochure very carefully.

Playing to win-winWe know that top-class DTH rock drilling tools are a good basis to start working from. But to help you extract maximum productivity from your drilling operation, we provide value-added support and extensive know-how. As we see it, in the best of all business worlds everybody wins.

Care and maintenanceWe have wide experience and knowledge of service and reconditioning of DTH hammers and bits. Our know-how and grinding equipment will maximize the performance of your bits, while the breakout bench facilitates hammer service. Our backhammer, moreover, will help you recover drill strings stuck in the hole -- saving time and money.

Training -- on and offline
We work closely with our customers to optimize training for operators and maintenance staff. Service and training can even be performed on a daily basis together with our local sales teams and technical service personnel.

We can also help you remotely -- thanks to our PC-based training tools. One of the most effective ways to learn about drill steel is through our Computer Based Training (CBT) program. With the aid of 3D animations, photographs, film sequences, and interactive lessons the student will gain valuable insight into how the market's leading rock drilling tools can provide a real boost to profitability. In total, the Secoroc CBT program comprises some 50 hours of lessons and exercises.

Supply and inventoryWith access to our extensive DTH product range, you'll find just the right products for your drilling application. Our efficient supply chain is designed to support you from day one and every step of the way. What's more, working closely together we'll set up and monitor a smooth supply link to your drilling operations.

After centuries of innovation, we don't know how to stopSecoroc's quest for superior drilling economy has been the key driver in all our innovations. But we never forget where most of our ideas come from. As a customer, your input and active involvement in our development process is always welcome. After all, the vast majority of our innovations over the years have been products of listening and learning.

With our DTH equipment being as efficient as it is, you run the risk of having plenty of time on your hands.

How to spend it? You could immerse yourself in classic literature.

You could learn how to tend a bonsai tree.

Or you could do the smart thing and head for www.atlascopco.com, where you'll find more productivity boosting solutions.